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Comparison of different adhesives on shear bonding strength between brackets and light-cured composite resin
LI Liang，WANG Hong，HOU Zhi-ming
2013, 5 (1):
42-44.
Abstract：Objective To compare different orthodontic adhesives on shear bonding strength between brackets and light-cured composite resin and to provide a reference for clinical applications. Methods Ten self-curing resin cuboid specimens were made in Department of Orthodontics，School of Stomatology，China Medical University in March，2012. The 4 surfaces of specimens were filled with light-cured composite resin. A total of 40 resin surfaces were randomly divided into groups A，B，C，D with 10 surfaces in each group. Orthodontic brackets in the four groups were bonded by Jingjin enamel adhesive，3M UniteTM chemic-cured adhesives，3M TransbondTM light-cured adhesives and light-cured composite resin，respectively. The shear bonding strength of all specimens were tested and the adhensive remnant index （ARI）was measured. Results Shear bonding strength of 4 groups was（7.763 ± 1.240）MPa（group A），（8.231 ± 0.338）MPa（group B），（8.654 ± 0.916）MPa（group C），and（8.349 ± 0.820）MPa（group D），respectively. The shear strength of four kinds of adhesive all met the clinical requirements. In group C and group A，the shear strength differences were statistically significant（P < 0.05）. ARI difference did not have statistical significance in all groups（P > 0.05）. Conclusion Four kinds of adhesives all meet clinical requirements while adhering brackets to polished rough surface of light-cured resin. The shear bonding strength of 3M TransbondTM light-cured adhesive is best.
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